Brake



Oct. 29, 1935. E. LA BRIE BRAKE Original Filed March l2, 1928l PatentedOct. 29, 1935 UNITED STATES BRAKE Ludger E. La Brie, South Bend, Ind.,assignor to Bendix Brake Company, South Bend, Ind., n.

corporation of Illinois Original application March 12, 1928, Serial No.261,068. Divided and this application October 5, 1933, Serial No.692,285

6 Claims.

This invention relates to brakes, and is illustrated as embodied in aninternal expanding brake for an automobile.

An object of the invention is to improve and 5 simplify the adjustmentmeans of the brake, to

facilitate taking up for wear.

One feature relates to the use in the adjustment of a nut or the likeheld by the shoe and a stamping secured to the shoe, and whichpreferably is formed as three sides of a rectangle completed on thefourth side by the shoe, with the nut or its equivalent fitting into therectangular opening so formed.

This is especially useful in mounting an adjusting nut or the like onthe web of an L-section brake shoe, in the angle between the rim and theweb.

Another feature of the invention relates to an adjusting deviceespecially adapted for use with the above-described adjusting nut andwhich comprises two threaded thrust members engaging the adjusting nutsof the two brake shoes, and which are pivotally connected by seating therounded end of one of them in a socket formed in the end of the other.

The above and other objects and features of the invention, includingvarious novel combinations of parts and desirable particularconstructions, will be apparent from the following description of theillustrative embodiment shown in the accompanying drawing, in which:

Figure 1 is a vertical section through the brake, just inside the headof the brake drum, and showing the brake shoes in side elevation; and

Figure 2 is a partial section on the line 2-2 of Figure 1, showing themounting of one of the adjusting nuts on its shoe.

The illustrative brake includes a rotatable drum I, at the open side ofwhich is a support such as a backing plate I2, and within which isarranged the friction means of the brake. 'Ihe friction meansillustrated includes two L-section shoes I4 and I6, provided withsuitable steady rests and positioning devices I8 and 20 and with springclips 22 carried by the backing plate and yieldingly holding the webs ofthe shoes.

The brake is applied by means such as a shaft 24 having a crank arm 26to which is pivoted a tension element 28 having in its sides socketspivotally receiving the rounded ends of toggle links 30 whose other endsare pivotally seated in sockets in the ends of the shoes. The brake hasone or more return springs 32.

The shaft 24 may extend through the backing 5 plate I2, shown providedwith a bearing I4 for (Cl. 18S-79.5)

the shaft, and may conveniently have a lever 36 actuated by a link or'the like 38, the lever and link being outside the brake enclosure. Theshoe I4 anchors on the bearing 34 when the drum is turning clockwise,and the shoe I6 anchors on a 5 boss 40 (integral with or iixedly securedto the backing plate) when the drum is turning counterclockwise.

Stampings 42 spot-welded or otherwise secured to the lower ends of thewebs of the shoes in the angle between the rim and the web, are eachdrawn to form cup-shaped elements forming three sides of a square orother rectangle, the fourth side of which is formed by the shoe web.Adjusting nuts 44 are seated in these rectangles, in thrust engagementwith the bottoms of the cup-shaped elements.

Thrust members 48 and 48, threaded into said nuts respectively, arepivotally connected by forming the head of the element 48 with aspherical socket or recess receiving a spherical part 50 integrallyformed on the head of the member 48. The heads of elements 46 and 48 areshown loosely embraced by a short square tube 52 having openings 54 toreceive a nail or other tool used by the driver in adjusting the brake.

A U-shaped leaf spring 56, having its ends slotted (see Figure 2) toslip over the thrust elements 46 and 48, is arranged to engage the headsof the elements 46 and 48 and yieldingly hold them together. This springin turn has riveted thereto another leaf spring 58, serving as a springpawl engaging the sides of the square sleeve 42 to hold it againstunintended turning.

While one illustrative embodiment has been described in detail, it isnot my intention to limit the scope of the invention to that particularembodiment, or otherwise than by the terms of the appended claims. Thepresent application is a division of my application No. 261,068, tiledMarch 12, 1928.

I claim:

1. An L-section shoe having a web at one side, a stamping secured at itsends to said web, and a' threaded nut held by the stamping and said 45web.

2. A brake comprising, in combination, shoes arranged end to end, andtwo thrust members respectively adjustably carried by the adjacent endsof said shoes and one of which has a rounded end and the other of whichhas a socket receiving said rounded end.

3. A brake shoe having a stamping secured thereto at its ends to formthree sides of a rectangle completed on the fourth sideA by said shoe,and an adjusting nut ntting in said rectangle and held by the stampingand the shoe.

4. A brake shoe having a. stamping secured `thereto and with the side ofthe shoe forming a.

socket opening in the direction of the shoe length, and an adjusting nutnon-rotatably seated in said socket.

5. A brake shoe having a. web with a. cupshaped stamping secured to theside of said web with its open end facing toward the end of th shoe.

6. A brake shoe having a, web with a cupshaped stamping secured to theside of said web with its open end facing toward the end of the shoe, incombination with an adjusting part seated therein.

LUDGER E. LA BRIE.

